National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Light Rain Fog/Mist

74°F

23°C

Humidity 88%
Wind Speed NW 9 mph
Barometer 30.05 in (1017.1 mb)
Dewpoint 70°F (21°C)
Visibility 4.00 mi
Last update 14 Oct 10:53 am CDT
Extended Forecast for

Valmeyer IL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly before 5pm. Cloudy, with a high near 77. Light north wind.

    High: 77 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 68. Calm wind. Chance of precipitation is 60%.

    Low: 68 °F

    Cloudy then
    Showers
    Likely

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 1pm. High near 85. Light and variable wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 80%.

    High: 85 °F

    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. West wind 7 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    Low: 48 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 57. Northwest wind around 17 mph, with gusts as high as 30 mph.

    High: 57 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 38.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly before 5pm. Cloudy, with a high near 77. Light north wind.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 68. Calm wind. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms, mainly before 1pm. High near 85. Light and variable wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. West wind 7 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Friday
Mostly cloudy, with a high near 57. Northwest wind around 17 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Sunny, with a high near 61.
Saturday Night
Clear, with a low around 38.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Valmeyer IL
 38.31°N 90.3°W (Elev. 397 ft)
Last Update:
11:31 am CDT Oct 14, 2026
Forecast Valid:
11am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation